This species is known from the lowland coastal forests of the states of Rio de Janeiro, São Paulo and Paraná, and from northern Santa Catarina State, Brazil. It occurs at very low elevations.
Habitat and Ecology
This species is found in secondary and primary forest on leaves near the ground and in bogs. It breeds in rain pools on the ground. It is not known to occur in anthropogenic habitats.
It is a very common species.
Clear-cutting of forests, and large-scale livestock farming is an increasing threat within the range of the species.
The species' occurs within several protected areas, mainly within its northern range. More research into the species' Extent of Occurrence is needed.
Carlos Alberto Gonçalves da Cruz, Ulisses Caramaschi, Magno Vicente Segalla 2004. Dendrophryniscus leucomystax. In: IUCN 2014